package com.sunfeng.netty.atguigu.groupchat;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.*;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.codec.string.StringEncoder;
import lombok.extern.slf4j.Slf4j;

/**
 * @author 孙峰
 * @Description: TODO
 * @date 2020/12/7 13:48
 */
@Slf4j
public class GroupChatServer {
    private int port; //监听端口

    public GroupChatServer(int port) {
        this.port = port;
    }
    //  编写 run 方法， 处理客户端的请求

    public void run() throws Exception {
        EventLoopGroup bossGroup = new NioEventLoopGroup(1);
        EventLoopGroup workerGroup = new NioEventLoopGroup();
        try {
            ServerBootstrap bootstrap = new ServerBootstrap();
            bootstrap.group(bossGroup, workerGroup)
                    .channel(NioServerSocketChannel.class)
                    .option(ChannelOption.SO_BACKLOG, 128)
                    .childOption(ChannelOption.SO_KEEPALIVE, true)
                    .childHandler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        protected void initChannel(SocketChannel ch) throws Exception {
                            ChannelPipeline pipeline = ch.pipeline();
                            // 加入解码器
                            pipeline.addLast("decoder", new StringDecoder());
                            // 加入编码器
                            pipeline.addLast("encoder", new StringEncoder());
                            // 加入自己业务员处理handler
                            pipeline.addLast(null);
                        }
                    });
            log.info("netty 服务器启动成功");
            ChannelFuture channelFuture = bootstrap.bind(port).sync();
            // 监听关闭
            channelFuture.channel().closeFuture().sync();


        } finally {
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }
    }

    public static void main(String[] args) throws Exception {
        new GroupChatServer(8000).run();
    }
}
